RUTHERFORD — Transportation crews have temporarily stabilized an overpass on Route 3, allowing the eastbound lanes of the highway to open, following a crash that closed the span for more than 12 hours, authorities said.

But the Ridge Road overpass is still closed, Rutherford Police Lt. Robert Arnold said Thursday. Crews did temporary repairs to stabilize the overpass overnight, state Department of Transportation spokesman Steve Schapiro said. They’re designing a permanent repair, he said, but didn’t know when the overpass would reopen.

The Delafield Avenue entrance to Route 3 East opened around 10 a.m., Arnold said.

Drivers can use Orient Way or Park Avenue instead of the Ridge Road overpass.

The overpass was damaged when a tractor trailer crashed into it shortly before 4 p.m. Wednesday. A supporting beam of the overpass is adjacent to a natural gas line, and DOT engineers and a Public Service Electric & Gas crew rushed to reroute it before the closed lanes caused a rush hour commuting mess.

The initial accident led to several secondary collisions, police said. Two people reported injuries, Arnold said, but only one was transported to the hospital. Arnold did not know the extent of the injuries.